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Finding the Fourth Proportional to 528,562.59, 729,416.87 and 286,845.21

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Solution

The fourth proportional to 528,562.59, 729,416.87 and 286,845.21 is: 395,846.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,562.59 : 729,416.87 = 286,845.21 : x
  2. Step 2: Convert to fraction form
    528,562.59/729,416.87 = 286,845.21/x
  3. Step 3: Cross multiply
    528,562.59x = 729,416.87 × 286,845.21
  4. Step 4: Simplify right side
    528,562.59x = 209,229,733,818.47
  5. Step 5: Solve for x
    x = 209,229,733,818.47/528,562.59
  6. Step 6: Final answer
    x = 395,846.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.